Toiba, Yesberlin, M. Rusydi H., Petrus Demon Sili, and Maskur Maskur. 2017. “Analisis Mikrotremor Kawasan Palu Barat Berdasarkan Metode Horizontal To Vertical Spectral Ratio (HVSR)”. Gravitasi 15 (1). https://doi.org/10.22487/gravitasi.v15i1.7887.